Elevation of plasma beta-amyloid level by glucose loading in Alzheimer mouse models.

Abstract

With the emergence of a promising approach to treat Alzheimer disease (AD) targeting the beta-amyloid (Abeta) pathway, it is necessary to establish new diagnostic biomarkers that enable the antemortem diagnosis of AD. Although plasma Abeta has been suggested as a non-invasive biomarker, its significance has been inconclusive. Thus, it is important to improve the diagnostic potential of plasma Abeta. One of the potential approaches is to modify plasma Abeta level using various modulators. In this study, we evaluated the influence of glucometabolic status on plasma Abeta level in two lines of AD transgenic mouse. The present study demonstrated that plasma Abeta level rapidly increased after glucose loading. More importantly, the magnitude of the increase in plasma Abeta was significantly larger in AD transgenic mice than in wild-type littermates. These findings might provide a novel diagnostic tool for AD using the elevation of plasma Abeta level after glucose loading.

• Authors: Shuko Takeda, Naoyuki Sato, Kozue Uchio-Yamada, Kyoko Sawada, Takanori Kunieda, Daisuke Takeuchi, Hitomi Kurinami, Mitsuru Shinohara, Hiromi Rakugi, Ryuichi Morishita
• Journal: Biochemical and biophysical research communications (Biochem Biophys Res Commun) Vol. 385 Issue 2 Pg. 193-7 (Jul 24 2009) ISSN: 1090-2104 [Electronic] United States
• PMID: 19450564 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Amyloid beta-Peptides
• Biomarkers
• Blood Glucose
• Peptide Fragments
• amyloid beta-protein (1-40)
• amyloid beta-protein (1-42)
• Glucose

Topics

• Alzheimer Disease (blood, diagnosis)
• Amyloid beta-Peptides (blood)
• Animals
• Biomarkers (blood)
• Blood Glucose (analysis)
• Disease Models, Animal
• Glucose (administration & dosage)
• Glucose Tolerance Test
• Male
• Mice
• Mice, Transgenic
• Peptide Fragments (blood)